From 334280a11fa886738a895cc8a6bbb308c2a1a40b Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Sun, 12 Aug 2018 19:55:21 -0400
Subject: [PATCH] Added MultilineEntry.

---
 multilineentry.go | 97 +++++++++++++++++++++++++++++++++++++++++++++++
 zz_controls.go    |  1 +
 2 files changed, 98 insertions(+)
 create mode 100644 multilineentry.go

diff --git a/multilineentry.go b/multilineentry.go
new file mode 100644
index 0000000..88a75c4
--- /dev/null
+++ b/multilineentry.go
@@ -0,0 +1,97 @@
+// 12 december 2015
+
+// TODO typing in entry in OS X crashes libui
+// I've had similar issues with checkboxes on libui
+// something's wrong with NSMapTable
+
+package ui
+
+import (
+	"unsafe"
+)
+
+// #include "ui.h"
+// extern void doMultilineEntryOnChanged(uiMultilineEntry *, void *);
+// // see golang/go#19835
+// typedef void (*multilineEntryCallback)(uiMultilineEntry *, void *);
+import "C"
+
+// MultilineEntry is a Control that represents a space that the user
+// can type multiple lines of text into.
+type MultilineEntry struct {
+	ControlBase
+	e	*C.uiMultilineEntry
+	onChanged		func(*MultilineEntry)
+}
+
+func finishNewMultilineEntry(ee *C.uiMultilineEntry) *MultilineEntry {
+	m := new(MultilineEntry)
+
+	m.e = ee
+
+	C.uiMultilineEntryOnChanged(m.e, C.multilineEntryCallback(C.doMultilineEntryOnChanged), nil)
+
+	m.ControlBase = NewControlBase(m, uintptr(unsafe.Pointer(m.e)))
+	return m
+}
+
+// NewMultilineEntry creates a new MultilineEntry.
+// The MultilineEntry soft-word-wraps and has no horizontal
+// scrollbar.
+func NewMultilineEntry() *MultilineEntry {
+	return finishNewMultilineEntry(C.uiNewMultilineEntry())
+}
+
+// NewNonWrappingMultilineEntry creates a new MultilineEntry.
+// The MultilineEntry does not word-wrap and thus has horizontal
+// scrollbar.
+func NewNonWrappingMultilineEntry() *MultilineEntry {
+	return finishNewMultilineEntry(C.uiNewNonWrappingMultilineEntry())
+}
+
+// Text returns the MultilineEntry's text.
+func (m *MultilineEntry) Text() string {
+	ctext := C.uiMultilineEntryText(m.e)
+	text := C.GoString(ctext)
+	C.uiFreeText(ctext)
+	return text
+}
+
+// SetText sets the MultilineEntry's text to text.
+func (m *MultilineEntry) SetText(text string) {
+	ctext := C.CString(text)
+	C.uiMultilineEntrySetText(m.e, ctext)
+	freestr(ctext)
+}
+
+// Append adds text to the end of the MultilineEntry's text.
+// TODO selection and scroll behavior
+func (m *MultilineEntry) Append(text string) {
+	ctext := C.CString(text)
+	C.uiMultilineEntryAppend(m.e, ctext)
+	freestr(ctext)
+}
+
+// OnChanged registers f to be run when the user makes a change to
+// the MultilineEntry. Only one function can be registered at a time.
+func (m *MultilineEntry) OnChanged(f func(*MultilineEntry)) {
+	m.onChanged = f
+}
+
+//export doMultilineEntryOnChanged
+func doMultilineEntryOnChanged(ee *C.uiMultilineEntry, data unsafe.Pointer) {
+	m := ControlFromLibui(uintptr(unsafe.Pointer(ee))).(*MultilineEntry)
+	if m.onChanged != nil {
+		m.onChanged(m)
+	}
+}
+
+// ReadOnly returns whether the MultilineEntry can be changed.
+func (m *MultilineEntry) ReadOnly() bool {
+	return tobool(C.uiMultilineEntryReadOnly(m.e))
+}
+
+// SetReadOnly sets whether the MultilineEntry can be changed.
+func (m *MultilineEntry) SetReadOnly(ro bool) {
+	C.uiMultilineEntrySetReadOnly(m.e, frombool(ro))
+}
diff --git a/zz_controls.go b/zz_controls.go
index 3ea3392..2875e6e 100644
--- a/zz_controls.go
+++ b/zz_controls.go
@@ -27,6 +27,7 @@ func makeBasicControlsPage() ui.Control {
 	group.SetMargined(true)
 	vbox.Append(group, true)
 
+group.SetChild(ui.NewNonWrappingMultilineEntry())
 /*
 	entryForm = uiNewForm();
 	uiFormSetPadded(entryForm, 1);